Apparatus for removing dust from exhaust-gases.



F, VALEUR.

APPARATUS PGR REMOVING DUST mom EXHAUST GASES.

APILICATION FILED APR. 10, 1914,

*L 13,@85 atented Get. 13,1914.

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EREDRIK VALEUR, OF GMUNDEN, AUSTRa-HUNGltY.

ZEIARAI'US FOR REMOVING DUST FROM EXHAUST-GASES.

Specification of Lctters'Patent.

Patented @etE i3?, ieder Application ile-c1 April 10, 1914. Serial No.531,007. v

To all whom t may concern Beit known thatl, Dr. Funnnru Vernon,

subject' 'ofthe Emperor of Germany, residing at Gmunden,Austria-Hungary, have invented certain new and useful lmprovements inApparatus for Removing Dust from Exhaust-Gases, of which the followingis a specification..

Practically every vnnuiufacturing plant in which, as aresult of theldrying,grinding, roasting or burning oi materials of any kind, dust isformed and along with exhaust gases is led to a chimney, has recourse tothe building of a large dust collector, to

prevent, as far as possible, the escape of the dust into the open airand the. consequent complaints'and claims for damage from the neighbors.But the building of such a collector is very limited, as much on accountof the amount of space taken as on account orthe cooling of the exhaustgases with the corresponding reduction of `the chimney pull. @n thisaccount the dust collector is successful in removing only a small part'of; the dust from the exhaust gases, by far the greater part of whichescapes into the atmosphere. I

The object or" the present invention is an apparatus by means of whichthis disadvantage can be overcome at small'cost.

ln View of the fact that the dust removing capacity of a dust collectoris une tq the gases passing on their way to the chimney, through achamber of large cross section in which they can expand, whereby theylose their Velocity, with the further resultthat a part of the dustsuspended therein pre cipitates or settles down on the ground, iibeca-me the object of the present invention to provide means to increasethis precipltation to the highest possible degree. This the presentinvention has now accomplished.

llt consists essentially ,in means whereby the dust-collector, orthoflue or duct or the chimney, is divided into a number of separatecompartments in which the velocity of the passing gases throughout theentire area ot each con'ipartment is uniformly reduced.- The inventionprovides at 'the same time a means of regulating the velocity of thepassing gases according to .requirements and thereby of continuallymaintaining the operation of the plant at a maximum eiiiciency.

The uniform reduction of vthe velocity of the gases throughout the Wholearea of the dust collector or the chimney is aceoin- .i

plished by means of a trarne of the sine of the cross-sectional arca ofthe collector or the chimney containing a gauze screen or network ofiron or other material ixed in the dust collector, the `Hue or duct, orthe chimney. By means thereof the cirossffstctional arca of the dustcollector, due or chimney is reduced at that point by the sum of that ofthe .wires forming the screen, and, correspondingly, the velocity of thegases in front of the frame is reduced. Behind the frame the chimneypulls the gases orward with the original power. lf'thereis now placed ata certain distance behind the first frame, say at a distance of fromonce to twice the Width of the dust collector or flue, a second frame,and behind the second frame a third, and so on, up to the entrance ofthe gases into the chimney, and' if in the chimney itself xmlves ordempers are arranged Which also are formed'with a gauze or network ofmetal and which extend entirely across the chimney, the velocity of thevgases in the entire space between the first andl last frame isconsiderably, and if all the i'iiames are filled with gauze of similarmesh, uniformly reduced.

By using gauze of varying mesh, it is possible to obtain any desireddegree of velocity of the gases, and to reduce it to such a point assuits best the operation of the drying drum, roasting or combustionvfurnace or the like. Accordingly the gauze of the screens toward theend 'of the dust collector \or flue and in the ,chimney should always beof liner mesh.

For continuously securing ,a uniform velocity of the gases in the/ dustcollector, it preferable to provide apparatus' which connects togetherall thescreens in the dust collector and whichlis capable of giving a'tdefinite short `intervals to one frame after the other a short jerk orimpact to reeit from any adhering dust. Such apparatus `are known andneed not be described here.

ln the drawing i illustrated an embodi- The dust conveying eXhaus'Lgasesenter i the exhaust liuc at a. and passnsuccessively through the screensa, b, c, el, c, f, g, and

then escape through the chimney into-the 13.0

conil'Jartlnents, to contract the cross-feedionall area of the said flueat the points where the screens are located, whereby the paso` ingthrough the l'lue are momentarily condensed in iront of each screen andtheir velocity n'ion'ientaribreduced, to permit the zo dust toprecipitate i'u said compartments.

In testimony hereof l have hereul'xto Set my hand in presence of twosubscribing; witnesses.

De. F'REDRK VALEUR. VJitnesses:

JOSEF RiCHAnDs, AUGUST FUGGER.

